Hydraulic or steam crane



(No Model.) 0'. M; RYDER.

Hydraulic or Steam Crane.

Nq. 242,795. Patented .lu'pe 14, I881 INVENTOR ATTORNEY WITNESSES N PETERS. momuma n w. Wnshingkm. v.0

made of forged steel.

' :UNITED STATES PATENT OFFICE,

CHARLES M. RYDER, OF CLEVELAND, ASSIGNOR TO MORGAN, WILLIAMS & 00., or ALLIANCE, OHIO.

HYDRAULIC OFl STEAM CRANE.

SPECIFICATION forming part of Letters Patent No. 242,795, dated June 14, 1881,

' Application filed April 0, 1881. (No model.)

T 0 all whom it may concern.-

Be it known that I, OHARLEs M. RYDER, of Cleveland, in the county of Guyahoga and State of Ohio, have invented certain new and useful Improvements in Hydraulic or Steam Cranes and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in.

essentially, in the combination, with a hollow.

upright post or standard and a bar secured to the upper end of said hollow post or standard, of a cylinder encircling the upper end of the hollow post and lower end of the bar or guide,}

a jib connected to said cylinder, and suitable pipes for admitting fluid to the interior of the hollow post or standard, whereby the cylinder, with its jib, may be raised by the pressure of the fluid and retained in any desired vertical adjustment and the jib swung around to any desired position.

My invention further consists in certain features of construction and combinations of parts, as will hereinafter be explained, and pointed out in the claims.

The accompanying drawing is a view, partly in vertical section and partly in side elevation, of my invention.

A represents a hollow metal post or standard, the lower end of which rests in a metal step, B, having an upright flange, I), through which are inserted set-screws b, the inner ends of which bear against the sides of the lower end of the post and serve to retain the lower end of the post in proper lateral adjustment, for a purpose hereinafter explained.

O is a round metal bar, and is preferably The upper end of the bar 0 is reduced in size, as at 0, and secured in the bracket D, fastened to any suitable frame-work, E. The lower end of the bar 0 is inserted within the upper end of the hollow post or standard A, and rests upon an annular shoulder, cl, formed in the bore F of the post or standard. Thus it will be observed that the crane-post is formed of two sections properly secured at top and bottom, and connected at their adjacent ends in the manner shown and -desdribed.

G represents a cylinder of greater diameter than thestandard or post,f0rmingan intervenin g chamber, H, between said parts.

To the uppcr'end of the cylinder is secured a stuffing-box, I, which is made to extend within the upper end of the cylinder an d there form an elongated bearing for the bar G, which snuglyfits in said stuffing-box.

J is a gland, and J any suitable packing, whereby a tight joint is formed at the upper end of the cylinder. The lower end of cylinder G is provided with a gland, G, and packing g, to insure a tight joint between the standard or post and lower end of the cylinder.

H represents the swin gin g jib, which is firmly secured at one end to the lower end of the cylinder, while the outer end of the jib is supported by a brace-rod, K, attached thereto, its upper end being secured to the upper end of the cylinder. i y

The lower end of the bar 0 is bored out, forming a passage, L, with the upper endl of which connect the lateral passages M, andl through which the fluid may flow from the hollow post to the cylinder. The upward pressure of the fluid on the cylinder is proportioned to the difference between the area of the upper end of the hollow standard and the area of that portion of the cylinder-head located between the bar and cylinder. When the cylinder is in its lowest position and its upper head rests upon the top of the hollow post the fluid is allowed to enter beneath the cylinder-head through openings a formed inthe upper end of the 1101- low post.

N is a supply-pipe for conducting water or steam to the hollow post. This supply-pipe is furnished with any suitable valve mechanism, whereby the fluid may be readily admitted to the cylinder when it is desired to elevate the jib, also to close the supply and escape and re tain the water in the cylinder and secure the jib in any desired vertical adjustment for any length of time, and also to cut off the supply and open an escape to allow the water to flow out of the cylinder and the jib to descend by its gravity. As has been stated, the lower end of the hollow post is adapted to be adjusted laterally. This is done in order to keep the postinaperfectlyverticalposition. Sometimes, owing to an uneven settling of the foundationstone or sagging of the frame-work, the post leans slightly to one side of the vertical, and in such case thejib will always swing around to one side of the post. In order to guard against this and cause the jib to rest at any point of its travel around the post, the lower end of the post is provided with devices whereby it may be laterally adjusted, if necessary, to bring the post and bar into a vertical position.

I have not shown the carriage and other appliances usually attached to the jib, as any ordinary means usually employed may be used in connection with thejib of my improvement in cranes.

From the foregoing it will be observed that a craneconstructed in accordance with my invention is of few parts, simple and economical in manufacture, andis adapted to be quickly and easily adjusted. The weight required to be raised by the pressure of water is reduced to the minimum, the standard or post and bar bein g stationary and rigidly secured above and below, while the cylinder and jib are raised an d lowered and freely turned to any desired position.

It is evident that many slight changes in the form and construction of parts might be resorted to without departing from the spirit of my invention, and hence I would have it understood that I do not restrict myself to the exact construction and arrangement of parts shown and described.

The post or standard instead of being made in two parts may be made in a single piece and the upper portion reduced in size.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A crane consisting in the combination, with a hollow post or standard and a round bar connected to its upper end, of a verticallymovable cylinder, the'opposite ends of which are fitted upon the hollow post and bar, and a jib secured to said cylinder, substantially as set forth.

2. In a hydraulic or steam crane, the combination, with a hollow post or standard and a round bar having its lower end supported on a shoulder within the upper end of said hollow post or standard, of a vertically and axially adjustable cylinder having its opposite heads fitted upon the bar and hollow post, and a jib secured to said cylinder, substantially as set forth.

3. In a hydraulic or steam crane, the combination, with a hollow post or standard and a round bar inserted in the upper end of said hollow post, the lower end of said bar provided with vertical and lateral conduits, of a vertically-movable cylinder having its opposite ends fitted upon the hollow post and bar, and a jib secured to said cylinder, sub'stantiallyas set forth.

4. The combination, with a stationary post, the lower end thereof being hollow, of a cylinder fitted upon said post, said cylinder being constructed to be raised and lowered and axially adjusted, substantially as set forth.

5. In a hydraulic or steam crane, the combination, with a post made of two parts, the lower section being hollow, of a vertically-adjustable cylinder fitted upon said sections, sub stantially as set forth.

6. In a hydraulic or steam crane, the combination, with the postand vertically-movable cylinder having a jib secured thereto, of a step provided with set-screws for imparting lateral adjustment to the lower end of the post, substantially as set forth.

In testimou y that Iclaim the foregoing I have hereunto set my hand this 1st day of April, 1881.

CHARLES M. RYDER. Witnesses:

(J. ODoNNELL, JAMES E. ODQNNELL.

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